![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
The exclusive demand for super quality basic refractory castable in the lining of steel making furnaces for the manufacture of inclusion free steel has posed a real challenge towards its innovative development. The present study demonstrated the formation of a new generation cementless basic refractory castable using Al-oxychloride as non-conventional binder and fused magnesia as aggregate. The basic castable body showed a distinct improvement in thermomechanical properties and dense advance matrix microstructure at low, intermediate as well as high temperature. The powder XRD pattern of fused magnesia based basic castable on sintering at 1500°C revealed the existence of well crystalline periclase as major along with magnesium aluminate as minor crystalline phases. The SEM images of cement free basic castable on sintering at 1500°C exhibited an advance matrix microstructure with uniform distribution of normal size periclase grains surrounded by MgAl2O4 and Al2O3 layers at the grain boundaries with occasional presence of micro porosity.